[palo-alto-cortex-xsoar] feat(collector): create XSOAR collector (#301)

[mariot]

Proposed changes

Testing Instructions

1. Step-by-step how to test
2. Environment or config notes

Related issues

• Closes [Palo Alto XSOAR] Create the collector #301

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality
• For bug fix -> I implemented a test that covers the bug

Further comments

[codecov]

Codecov Report

❌ Patch coverage is 98.64371% with 26 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.10%. Comparing base (9754909) to head (715f894).

Files with missing lines	Patch %	Lines
palo-alto-cortex-xsoar/tests/test_collector.py	91.60%	12 Missing ⚠️
palo-alto-cortex-xsoar/src/collector/models.py	90.56%	5 Missing ⚠️
...-cortex-xsoar/src/models/settings/config_loader.py	91.30%	2 Missing ⚠️
palo-alto-cortex-xsoar/src/services/converter.py	87.50%	2 Missing ⚠️
...lo-alto-cortex-xsoar/src/services/trace_service.py	96.96%	2 Missing ⚠️
palo-alto-cortex-xsoar/src/models/incident.py	97.22%	1 Missing ⚠️
palo-alto-cortex-xsoar/tests/conftest.py	97.91%	1 Missing ⚠️
palo-alto-cortex-xsoar/tests/factories.py	97.91%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #348      +/-   ##
==========================================
+ Coverage   71.01%   77.10%   +6.09%     
==========================================
  Files         128      165      +37     
  Lines        6775     8692    +1917     
==========================================
+ Hits         4811     6702    +1891     
- Misses       1964     1990      +26     

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[guzmud]

Unless I'm mistaken, the API rate-limit responses leading to a backoff and retry is missing from the codebase (US.3 Error Handling & Resilience, AC-3.1, part of chunk 5 Hardening & Delivery).

Edit: handled by including the HTTP error 429 in the retry/backoff system

[Kakudou]

Mostly QoL, so i will conduct the execution/usage tests of the collector while waiting for those small fixes ;)